Properties props = new Properties();

// 开启debug调试
props.setProperty("mail.debug", "true");
// 发送服务器需要身份验证
props.setProperty("mail.smtp.auth", "true");
// 设置邮件服务器主机名
props.setProperty("mail.host", "smtp.qq.com");
// 发送邮件协议名称
props.setProperty("mail.transport.protocol", "smtp");

Session session = Session.getInstance(props);

//邮件内容部分
Message msg = new MimeMessage(session);
msg.setSubject("seenews 错误");
StringBuilder builder = new StringBuilder();
builder.append("url = " + "http://blog.csdn.net/never_cxb/article/details/50524571");
builder.append("页面爬虫错误");
builder.append("\n data " + TimeTool.getCurrentTime());
msg.setText(builder.toString());
//邮件发送者
msg.setFrom(new InternetAddress("**发送人的邮箱地址**"));

//发送邮件
Transport transport = session.getTransport();
transport.connect("smtp.qq.com", "**发送人的邮箱地址**", "**你的邮箱密码或者授权码**");

transport.sendMessage(msg, new Address[] { new InternetAddress("**接收人的邮箱地址**") });
transport.close();

DEBUG SMTP: AUTH LOGIN command trace suppressed
DEBUG SMTP: AUTH LOGIN failed
Exception in thread "main" javax.mail.AuthenticationFailedException: 530 
Error: A secure connection is requiered(such as ssl). More information at http://service.mail.qq.com/cgi-bin/help?id=28

MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
props.put("mail.smtp.ssl.enable", "true");
props.put("mail.smtp.ssl.socketFactory", sf);

DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.qq.com", port 465, isSSL true
220 smtp.qq.com Esmtp QQ Mail Server
DEBUG SMTP: connected to host "smtp.qq.com", port: 465
...
 data 2016-01-19 17:00:44 Tue
.
250 Ok: queued as 
QUIT
221 Bye

public class MailTool {
  public static void main(String[] args) throws MessagingException, GeneralSecurityException {
    Properties props = new Properties();

    // 开启debug调试
    props.setProperty("mail.debug", "true");
    // 发送服务器需要身份验证
    props.setProperty("mail.smtp.auth", "true");
    // 设置邮件服务器主机名
    props.setProperty("mail.host", "smtp.qq.com");
    // 发送邮件协议名称
    props.setProperty("mail.transport.protocol", "smtp");

    MailSSLSocketFactory sf = new MailSSLSocketFactory();
    sf.setTrustAllHosts(true);
    props.put("mail.smtp.ssl.enable", "true");
    props.put("mail.smtp.ssl.socketFactory", sf);

    Session session = Session.getInstance(props);

    Message msg = new MimeMessage(session);
    msg.setSubject("seenews 错误");
    StringBuilder builder = new StringBuilder();
    builder.append("url = " + "http://blog.csdn.net/never_cxb/article/details/50524571");
    builder.append("\n页面爬虫错误");
    builder.append("\n时间 " + TimeTool.getCurrentTime());
    msg.setText(builder.toString());
    msg.setFrom(new InternetAddress("**发送人的邮箱地址**"));

    Transport transport = session.getTransport();
    transport.connect("smtp.qq.com", "**发送人的邮箱地址**", "**你的邮箱密码或者授权码**");

    transport.sendMessage(msg, new Address[] { new InternetAddress("**接收人的邮箱地址**") });
    transport.close();
  }
}